Folding mirror



FIG. 1 is a left side perspective view of the opened folding mirror embodying my new design;

FIG. 2 is a top view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a side view thereof;

FIG. 5 is a bottom view thereof;

FIG. 6 is a rear view thereof;

FIG. 7 is a top view of the closed folding mirror;

FIG. 8 is a front view of FIG. 7; and,

FIG. 9 is a side view of FIG. 7. 

The ornamental design for a folding mirror, as shown and described. 